The Customization Package Changed

During synchronization, Siebel CRM Desktop determines if the customization package for the user who is currently logged in changed in such a way that it must reinstall the data structure. The following changes in the data structure of the customization package can cause this situation:

An object is added to or deleted from the mapping scheme.
A field is added to an existing object or an existing field is modified.

If the customization package changed, and if Siebel CRM Desktop must reinstall the data structure, then it displays a prompt that is similar to the following:

A new configuration is available. Are you ready to download and apply it? Selecting 
"Yes" will remove your current data, re-install the data structure, and download the 
data again.